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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The viscosity of water is __________ than that of mercury.

Same as
Lower
None of these
Higher

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Hydraulics and Fluid Mechanics in ME
The units of dynamic or absolute viscosity are

newton-sec per meter
metres² per sec
newton-sec² per meter
kg sec/meter

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Hydraulics and Fluid Mechanics in ME
Motion of a liquid in a volute casing of a centrifugal pump is an example of

Rotational flow
Radial
Forced spiral vortex flow
Spiral vortex flow

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Hydraulics and Fluid Mechanics in ME
The height of a water column equivalent to a pressure of 0.15 MPa is

15.3 m
35.3 m
25.3 m
45.3 m

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Hydraulics and Fluid Mechanics in ME
The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

Keeps on decreasing
May increase/decrease
Keeps on increasing
Remain constant

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Hydraulics and Fluid Mechanics in ME
The cavitation in reaction turbines is avoided, to a great extent by

All of these
Providing highly polished blades to the runner
Using stainless steel runner of the turbine
Installing the turbine below the tail race level

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